likecollective-indexer: books with staked_amount 0 still appears in /book-nfts

[williamchong]

Example:
https://indexer.v3.like.co/collective/api/book-nfts?pagination.limit=100

{
"evm_address": "0x46a28baa1fd6CFdBAdBBaF9405357691E4666EE8",
"staked_amount": "0",
"last_staked_at": "2025-11-05T17:58:28Z",
"number_of_stakers": 0
},

books with no staked amount should not appear in /book-nfts